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Finding the Fourth Proportional to 822,800.70, 1,135,008 and 478,597.88

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Solution

The fourth proportional to 822,800.70, 1,135,008 and 478,597.88 is: 660,199.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,800.70 : 1,135,008 = 478,597.88 : x
  2. Step 2: Convert to fraction form
    822,800.70/1,135,008 = 478,597.88/x
  3. Step 3: Cross multiply
    822,800.70x = 1,135,008 × 478,597.88
  4. Step 4: Simplify right side
    822,800.70x = 543,212,425,420.56
  5. Step 5: Solve for x
    x = 543,212,425,420.56/822,800.70
  6. Step 6: Final answer
    x = 660,199.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.